We develop a dynamic macroeconomic model in which the secular decline in real interest rates arises endogenously from rising wealth inequality. Challenging the standard "safe asset shortage" hypothesis, the model shows how falling real rates can coexist with a stable safe asset ratio--closely...

A revised version of this paper can be found at: 'http://ssrn.com/abstract=2667972' http://ssrn.com/abstract=2667972The paper derives the optimal carbon tax in closed-form from an integrated assessment of climate change. The formula shows how carbon, temperature, and economic dynamics quantify...

This paper is a revised version of: "http://ssrn.com/abstract=2643293" http://ssrn.com/abstract=2643293.A revised version of this paper can be found at: "http://ssrn.com/abstract=3307622" http://ssrn.com/abstract=3307622.The paper derives the optimal carbon tax in closed-form from an integrated...

In his pivotal contributions during the marginal revolution, Leon Walras along with W.S. Jevons assigned subjective utility directly to commodities (goods and services) as, in effect, a simplifying assumption — an assumption destined to become the keystone of neoclassical economics. But this...

This paper studies attention allocation behavior of rationally inattentive consumers who have CRRA preferences, face uninsured capital income risk, and suffer from an information-processing capacity constraint. For given attention devoted to capital income risk, we solve for the optimal...

This paper studies risk premia in an incomplete-markets economy with households facing idiosyncratic consumption risk. If the dispersion of idiosyncratic risk varies over the business cycle and households have preference for early resolution of uncertainty, asset prices will be affected not only...

This paper proposes an integrated framework to analyze jointly two key issues: the emergence of global imbalances and the precautionary motive for accumulating reserves. Standard models of general equilibrium would predict modest current account surpluses in the emerging markets if they face...

This paper studies attention allocation behavior of rationally inattentive consumers who have CRRA preferences, face uninsured capital income risk, and suffer from an information-processing capacity constraint. For given attention devoted to capital income risk, we solve for the optimal...

We consider risk sharing among individuals in a one-period setting under uncertainty, that will result in payoffs to be shared among the members. We start with optimal risk sharing in an Arrow-Debreu economy, or equivalently, in a Borch-style reinsurance market. From the results of this model we...

We compile, generalize and extend the results about the comparative static effects of risk changes on optimal risk-reduction and saving behavior. We use the time-separable discounted expected-utility model and consider income risk, inflation risk, and interest rate risk. For each type of risk,...